CLBO Crystal Can Be Fun For Anyone
CLBO Crystal Can Be Fun For Anyone
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Even so, in order to course of action the crystal is incredibly Sophisticated manufacturing techniques are required. For the reason that dawn of the crystal, working on this challenge, we are actually the sole organization on earth that could be processed With this crystal.
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We summarized The present growth position in the significant-energy DUV laser each in the wavelength of FHG of the one-μm laser and at 193 nm. The current growth on the strong-condition/fiber laser, and also the nonlinear optical crystals, prompts not only the normal electrical power but additionally the beam excellent (coherence) in the DUV lasers to an unparalleled amount.
全固态紫外激光器以其体积小、寿命长、效率高、光束质量好、调谐范围宽、谱线窄等优点，广泛应用于机械探伤、光刻、微加工和医学等领域，等，利用大功率近红外相干光源作为基于非线性调谐技术的基频源，通过多级变频产生紫外相干辐射被认为是发展紫外相干光源的重要途径。紫外相干光源的关键问题是研制紫外波段的非线性光学变频晶体。非线性光学晶体是实现频率变换的条件之一，因此对非线性光学晶体的生长、尺寸、损伤电阻、转换效率和允许的参数范围提出了越来越高的要求。
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The two the 1040 nm and 1078 nm laser originate from just one twin-wavelength Yb-doped fiber laser. Each and every laser is amplified by phases of fiber amplifier and Yb-doped components amplifier, respectively.
On the other facet, the ability scaling in the NIR laser is another component to improve the common electricity of the 193-nm DUV laser. Mainly because of the deficiency of the higher-ability amplification Resolution of the NIR laser (one example is at 1553 nm), nonlinear frequency processes for example optical parameter oscillation (OPO) might be applied to establish a wavelength converter by shifting the wavelength from 1 μm to the desired wavelength together with getting relative better energy [21]. Just lately, a diamond Raman laser confirmed its ability in attaining a significant ability along with a high conversion efficiency in the 1st Stokes in the 1-μm laser [22,23], which implies the possibility to become utilized in the 193-nm DUV laser era as a result of its high Raman gain and large frequency change.
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Within the scientific and industrial applications, the beam high quality from the DUV laser can also be an essential parameter. Specially, the beam excellent in the DUV laser significantly affects the laser machining outcomes. The beam excellent in the DUV laser is decided by that of the basic laser and also the crystal for that frequency conversion. Not long ago, a large-power DUV laser (>10 W) at 258 nm was claimed having a beam excellent of M2 < 1.5, which was generated by FHG of a Yb:YAG laser at 1030 nm utilizing the CLBO crystal [thirteen]. This laser would lead to a far better laser machining consequence in comparison to the preceding DUV lasers with larger sized M2.
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Additionally, combining the solid-state laser with other nonlinear system including stimulated Raman scattering, more info NIR lasers may very well be accomplished at new wavelengths with substantial ability and superior beam high quality, which was tested through the evidence-of-principle experiment. This Raman laser scheme supplies a different path to the higher-power DUV laser, Particularly on the wavelength of 193 nm.
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The conversion effectiveness from fundamental NIR to DUV is from 5% to 36% according to the described results in Table one. Escalating the conversion performance will reduce the load on the look and setup of the basic laser amplifier as well as the electrical ability consumption. A superb beam top quality of the basic laser will also contribute on the expanding from the conversion effectiveness and also the suitable energy intensity on the NIR and inexperienced laser during the SHG and FHG process, respectively. The highest conversion efficiencies from NIR to green and environmentally friendly to DUV laser by usage of CLBO crystal are 70% and all-around fifty%, respectively [12], which corresponds for the conversion efficiency of 35% from fundamental to DUV.
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